Leatherman is a brand of multitools and knives made by Leatherman Tool Group. Most Leatherman multi-tools are built around a pair of pliers, with up to 21 additional tools stored in the handles, including knives (straight and serrated blades), screwdrivers (flat, Phillips), saws, wire cutters and strippers, electrical crimper, bottle opener and can opener. Most models have a built-in safety mechanism that locks the active tool in the open position when fully unfolded. Their most well known products include Leatherman Wave, Leatherman Skeletool, Leatherman Charge, Leatherman Crunch, Leatherman Juice, Leatherman Leap, Leatherman Micra, Leatherman OHT, Leatherman Raptor, Leatherman Rebar, Leatherman Sidekick, Leatherman Squirt, Leatherman Signal, Leatherman Style, Leatherman Surge, Leatherman Tread and Leatherman Wingman. Leatherman currently produces folding knives under the Crater name.